1 /******************************************************************************* 2 * Copyright (c) 2009, 2018 Mountainminds GmbH & Co. KG and Contributors 3 * All rights reserved. This program and the accompanying materials 4 * are made available under the terms of the Eclipse Public License v1.0 5 * which accompanies this distribution, and is available at 6 * http://www.eclipse.org/legal/epl-v10.html 7 * 8 * Contributors: 9 * Marc R. Hoffmann - initial API and implementation 10 * 11 *******************************************************************************/ 12 package org.jacoco.core.runtime; 13 14 import java.util.regex.Pattern; 15 16 /** 17 * Matches strings against <code>?</code>/<code>*</code> wildcard expressions. 18 * Multiple expressions can be separated with a colon (:). In this case the 19 * expression matches if at least one part matches. 20 */ 21 public class WildcardMatcher { 22 23 private final Pattern pattern; 24 25 /** 26 * Creates a new matcher with the given expression. 27 * 28 * @param expression 29 * wildcard expressions 30 */ 31 public WildcardMatcher(final String expression) { 32 final String[] parts = expression.split("\\:"); 33 final StringBuilder regex = new StringBuilder(expression.length() * 2); 34 boolean next = false; 35 for (final String part : parts) { 36 if (next) { 37 regex.append('|'); 38 } 39 regex.append('(').append(toRegex(part)).append(')'); 40 next = true; 41 } 42 pattern = Pattern.compile(regex.toString()); 43 } 44 45 private static CharSequence toRegex(final String expression) { 46 final StringBuilder regex = new StringBuilder(expression.length() * 2); 47 for (final char c : expression.toCharArray()) { 48 switch (c) { 49 case '?': 50 regex.append(".?"); 51 break; 52 case '*': 53 regex.append(".*"); 54 break; 55 default: 56 regex.append(Pattern.quote(String.valueOf(c))); 57 break; 58 } 59 } 60 return regex; 61 } 62 63 /** 64 * Matches the given string against the expressions of this matcher. 65 * 66 * @param s 67 * string to test 68 * @return <code>true</code>, if the expression matches 69 */ 70 public boolean matches(final String s) { 71 return pattern.matcher(s).matches(); 72 } 73 74 } 75
